Eiji Tsuru
29Patents
10h-index
34Co-inventors
75Inventor score
Filing activity: Feb 12, 1988 → Jul 13, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6027145A | Joint for steel pipe having high galling resistance and surface treatment method thereof | Emerging Cross-Sectional Technologies | 68 | Expired |
| US6079802A | Rubber crawler | Performing Operations; Transporting | 60 | Expired |
| USD455444S1 | Rubber crawler | General | 47 | Expired |
| USD454890S1 | Rubber crawler | General | 45 | Expired |
| US4830411A | Threaded joint for oil-well pipe | Fixed Constructions | 25 | Expired |
| US6176524A | Oil well pipe threaded joint | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5403643A | Metallic core of rubber track | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5919577A | Fe-based alloy foil for liquid-phase diffusion bonding of Fe-based materials by enabling bonding in oxidizing atmospheres | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6782921B1 | High-strength steel pipe excellent in formability and burst resistance | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6264761A | Alloy foil for liquid-phase diffusion bonding bondable in oxidizing atmosphere | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7077485B2 | Rubber crawler | Performing Operations; Transporting | 8 | Expired |
| US6742852B2 | Rubber crawler | Performing Operations; Transporting | 7 | Expired |
| US6705648B1 | Pipe joint | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6843539B2 | Elastic endless crawler and method of producing the same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7459033B2 | Oil country tubular goods excellent in collapse characteristics after expansion and method of production thereof | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7438778B2 | Elastic endless crawler and method of manufacturing the same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7892368B2 | UOE steel pipe excellent in collapse strength and method of production thereof | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7967926B2 | UOE steel pipe excellent in collapse strength and method of production thereof | Emerging Cross-Sectional Technologies | 2 | Active |
| US7524001B2 | Rubber crawler | Performing Operations; Transporting | 2 | Expired |
| US8653400B2 | High strength welded steel tube superior in hydrogen embrittlement cracking resistance of weld metal and method of production of same | Emerging Cross-Sectional Technologies | 2 | Active |
| US8354382B2 | Hemifumarate of a pyrazole derivative | Human Necessities | 1 | Active |
| US7036893B2 | Rubber crawler and its manufacture method | Performing Operations; Transporting | 1 | Expired |
| US8399418B2 | Monosebacate of pyrazole derivative | Human Necessities | 1 | Active |
| US8955887B2 | Liquid phase diffusion bonded pipe joint | Performing Operations; Transporting | 1 | Active |
| US9188253B2 | Oil country tubular goods with dual phase structure and producing method thereof | Chemistry; Metallurgy | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.